prost_reflect/descriptor/
global.rs

1use std::sync::Mutex;
2
3use once_cell::sync::Lazy;
4use prost::bytes::Buf;
5use prost_types::FileDescriptorProto;
6
7use crate::{DescriptorError, DescriptorPool};
8
9static INSTANCE: Lazy<Mutex<DescriptorPool>> =
10    Lazy::new(|| Mutex::new(crate::reflect::make_wkt_descriptor_pool().unwrap()));
11
12impl DescriptorPool {
13    /// Gets a copy of the global descriptor pool. By default, this just contains the google well-known types.
14    ///
15    /// The global descriptor pool is typically used as a convenient place to store descriptors for `ReflectMessage` implementations.
16    ///
17    /// Note that modifications to the returned pool won't affect the global pool - use
18    /// [`decode_global_file_descriptor_set`](DescriptorPool::decode_global_file_descriptor_set) or
19    /// [`add_global_file_descriptor_proto`](DescriptorPool::add_global_file_descriptor_proto) to modify the global pool.
20    pub fn global() -> DescriptorPool {
21        INSTANCE.lock().unwrap().clone()
22    }
23
24    /// Decodes and adds a set of file descriptors to the global pool.
25    ///
26    /// See [`DescriptorPool::decode_file_descriptor_set`] for more details.
27    pub fn decode_global_file_descriptor_set<B>(bytes: B) -> Result<(), DescriptorError>
28    where
29        B: Buf,
30    {
31        let mut instance = INSTANCE.lock().unwrap();
32        instance.decode_file_descriptor_set(bytes)?;
33        Ok(())
34    }
35
36    /// Adds a single file descriptor to the global pool.
37    ///
38    /// See [`DescriptorPool::add_file_descriptor_proto`] for more details.
39    pub fn add_global_file_descriptor_proto<B>(
40        file: FileDescriptorProto,
41    ) -> Result<(), DescriptorError>
42    where
43        B: Buf,
44    {
45        let mut instance = INSTANCE.lock().unwrap();
46        instance.add_file_descriptor_proto(file)?;
47        Ok(())
48    }
49}
prost_reflect/descriptor/global.rs

prost_reflect/descriptor/
global.rs
